Diagnosis. As indicated in the generic description, Carbia differ from Pomasia
Guenťe species in having a series of two or three pale submarginal fasciae
that are more or less straight, distal to a strongly M-shaped postmedial. The
hindwings are unfasciated, whereas in Pomasia fasciae are present,
usually as strong as on the forewing. C. calescens has grey forewings
combined with pale orange hindwings, with a diagnostic dark brown lunule distal
to the central part of the postmedial 'M' of the forewing.

Geographical range. Borneo, Sumatra.

Habitat preference. No recent material has been taken, and the species
appears to be rare. The limited amount of older material is from lowland
localities.